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hi all Does anybody know how to modify the sampling rate of the codec/AD535 of the DSK6711 kit.] thanks a lot seshu |
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changing sampling rate of DSK6711/codec AD535
Started by ●December 5, 2002
Reply by ●December 5, 20022002-12-05
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K Seshu Babu- > Does anybody know how to modify the sampling rate of the codec/AD535 of the DSK6711 kit.] I think the sampling rate for AD535 on DSK C6711 board is fixed at 8 kHz, unless you mod the hardware. Jeff Brower DSP sw/hw engineer Signalogic |
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Reply by ●December 6, 20022002-12-06
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hi page 17 of the data manual for AD535 talks about how the sampling rate of codec is derived from the master clock and the external clock divider circuitry.Also the codec can operate upto 11.025 Khz of sampling rate. So the key is how to vary/program the external clock divider to get the required sampling rate in the codec. But the very last pages of the data manual which talk about programming the codec does not reveal any any options to modify the sampling rate. Is their any way to modify the external(on board) clock divider circuitry which porvides the clock to the codec? thanks a lot seshu Jeff Brower <>: > K Seshu Babu- > > > Does anybody know how to modify the sampling rate of the codec/AD535 > of the DSK6711 kit.] > > I think the sampling rate for AD535 on DSK C6711 board is fixed at 8 > kHz, unless you > mod the hardware. > > Jeff Brower > DSP sw/hw engineer > Signalogic > |
Reply by ●December 9, 20022002-12-09
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K Seshu Babu- The DSK board schematic shows one clock input signal, VC_MCLK, coming from one oscillator, designated Y2A, going to the AD535. You might try putting a socket there and then you at least can try different clock frequencies. Jeff Brower DSP sw/hw engineer Signalogic k seshu babu wrote: > > hi > > page 17 of the data manual for AD535 talks about how the sampling rate of codec is derived from the master clock and the external clock divider circuitry.Also the codec can operate upto 11.025 Khz of sampling rate. > So the key is how to vary/program the external clock divider to get the required sampling rate in the codec. > But the very last pages of the data manual which talk about programming the codec does not reveal any any options to modify the sampling rate. > > Is their any way to modify the external(on board) clock divider circuitry which porvides the clock to the codec? > > thanks a lot > seshu > > Jeff Brower <>: > > > K Seshu Babu- > > > > > Does anybody know how to modify the sampling rate of the codec/AD535 > > of the DSK6711 kit.] > > > > I think the sampling rate for AD535 on DSK C6711 board is fixed at 8 > > kHz, unless you > > mod the hardware. > > > > Jeff Brower > > DSP sw/hw engineer > > Signalogic |
